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The Relationship between Rationality of Investors and Market Efficiency - Essay Example

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The Relationship between Rationality of Investors and Market Efficiency

In an efficient market, significant information is freely accessible to all participants. Researchers argue that with the current availability and utilization of complicated modeling in capital markets and with substantiality superior revelation and analysis, superior approximations of returns may be made by expert investors (Keim & Ziemba, 2000, p. 255). These computations of returns approximations are possible where there are efficient market mechanisms. Therefore, there is a positive relationship between market efficiency and rationality of investors. (Jones, 2009, p. 329).The Efficient Market Hypothesis  In 1900, Louis Bachelier developed hypotheses of investment payoffs. Keim & Ziemba The Efficient Market Hypothesis is one of these theories of investment payoffs. The Efficient Market Hypothesis hypothesizes that, at any given time, equity prices fully replicate all accessible information. The propositions of the efficient marketplace hypothesis are profound (Fama, 1995, p. 4). Most traders who sell and buy equities do these under the postulation that the equities they are selling are worth below the selling price while equities they are purchasing are worth in excess of the price that they are disbursing. However, if there is an efficient market and current prices fully replicate all information, then selling and purchasing in an endeavor to outperform the marketplace will efficiently be a game possibility rather than expertise (Jones, 2009, p. 329)....
5) notes, Simon suggested three ways which a resolution maker can endeavor to optimize their returns. First, using max-min rule of the game theory, every investor deems the worst possible result for every investment and builds a portfolio, which will generate the biggest value when made up of a mixture of these minimum values. However, it is worth noting that there is no rational investor who would select securities, given that the worst likely result for equities is loss. Secondly, an investor can build a mixture of investment alternatives where the likelihood of every outcome is maximized. The combination of these investment alternatives will depend of the risk profile of every portfolio. Jones (2009, p. 325) observes that investment risk is positively related to the returns of that investment, implying that the investment with high risks generates higher returns. Rational investors will undertake investments which correspond to their risk tolerance categories. Thirdly, Simon visualizes the investor selecting one entire portfolio from a set of alternatives which will maximize the value. This may be selecting a portfolio containing bonds only, equities only, from accessible investment alternatives. Simon deems that the complexity of computation in relation to real human choice circumstances is beyond the average investor; however, with market efficiency these calculations can be performed. In an efficient market, significant information is freely accessible to all participants. Researchers argue that with the current availability and utilization of complicated modeling in capital markets and with substantiality superior revelation and analysis, superior approximations of returns may be made by expert investors (Keim & Ziemba, 2000, p. 255). These ...Show more

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This paper “The Relationship between Rationality of Investors and Market Efficiency” seeks to examine the relationship between market efficiency and rationality of investors based on the theories. Researchers argue that investors make investment decisions under various constraints…
The Relationship between Rationality of Investors and Market Efficiency essay example
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